Andrews, J.N. The Seventh Day of the Week is the Sabbath of the Lord. - Advent and Sabbath Tracts, 1855, No. 3: 64.
The Sabbath and Law of God. Bible Tracts. - Rochester, N.Y: Published at the Advent Review Office. 1855, Vol. 1.
Digitized by the Center for Adventist Research, James White Library, Andrews University.